package bit.book.interceptor;

import bit.book.constant.Constants;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

@Component
@Slf4j
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
      log.info("preHandle");
      HttpSession session = request.getSession();
      if(session==null||session.getAttribute(Constants.SESSION_USER_KEY)==null){
          response.setStatus(401);
          response.setContentType("text/html;charset=utf-8");
          response.getOutputStream().write("用户未登录".getBytes("UTF-8"));
          return false;
      }
      return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("postHandle");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        log.info("afterCompletion");
    }
}
